Nancy Pelosi, the Minority Leader of the United States House of Representatives, mingles before the start of the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013.

Photo: Alex Washburn

Nancy Pelosi, the Minority Leader of the United States House of...

Nancy Pelosi, the Minority Leader of the United States House of... Photo-5134600.69484 - SFGate

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Michael Tilson Thomas, the music director of the San Francisco Symphony, greets Bonnie Raitt, blues singer-songwriter, at the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013.

Photo: Alex Washburn, Special To The Chronicle

Michael Tilson Thomas, the music director of the San Francisco...

Michael Tilson Thomas, the music director of the San Francisco... Photo-5134597.69484 - SFGate

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Ann Fisher (left) chats with Norah Stone (right) during the cocktail hour of the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013.

Carl Pascarella (right) whispers something to Gala Chairwoman Gorretti Lui (left) as they make their way in to enjoy the performance at the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013.

David Kiyokawa checks his phone while waiting for a friend at the 102nd Symphony gala opening night at Davies Symphony Hall in San Francisco, Calif. on Tuesday, Sept. 3, 2013.

Photo: Stephen Lam, Special To The Chronicle

David Kiyokawa checks his phone while waiting for a friend at the...

David Kiyokawa checks his phone while waiting for a friend at the... Photo-5134915.69484 - SFGate

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Former United States Secretary of State George P. Shultz wears an Uncle Sam-themed pin at the 102nd Symphony gala opening night at Davies Symphony Hall in San Francisco, Calif. on Tuesday, Sept. 3, 2013.

Photo: Stephen Lam, Special To The Chronicle

Former United States Secretary of State George P. Shultz wears an...

Former United States Secretary of State George P. Shultz wears an... Photo-5134916.69484 - SFGate

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John and Lisa Grotts check in at the 102nd Symphony gala opening night at Davies Symphony Hall in San Francisco, Calif. on Tuesday, Sept. 3, 2013.

Photo: Stephen Lam, Special To The Chronicle

John and Lisa Grotts check in at the 102nd Symphony gala opening...

John and Lisa Grotts check in at the 102nd Symphony gala opening... Photo-5134917.69484 - SFGate

Karen Cundiff fans herself during the intermission of the performance at the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013. Michael Tilson Thomas led the orchestra in Gershwin's An American in Paris and Antheil's Jazz Symphony. Audra McDonald joined the orchestra to perform selections from the American Songbook.

A waiter carries a tray of food during the 102nd Symphony gala opening night at Davies Symphony Hall in San Francisco, Calif. on Tuesday, Sept. 3, 2013.

Photo: Stephen Lam, Special To The Chronicle

A waiter carries a tray of food during the 102nd Symphony gala...

A waiter carries a tray of food during the 102nd Symphony gala... Photo-5134981.69484 - SFGate

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U.S. House minority leader Nancy Pelosi is pictured at the 102nd Symphony gala opening night at Davies Symphony Hall in San Francisco, Calif. on Tuesday, Sept. 3, 2013.

Photo: Stephen Lam, Special To The Chronicle

U.S. House minority leader Nancy Pelosi is pictured at the 102nd...

U.S. House minority leader Nancy Pelosi is pictured at the 102nd... Photo-5134997.69484 - SFGate

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Toby Kahn, of Berkeley, holds his film camera at the 102nd Symphony gala opening night at Davies Symphony Hall in San Francisco, Calif. on Tuesday, Sept. 3, 2013.

Photo: Stephen Lam, Special To The Chronicle

Toby Kahn, of Berkeley, holds his film camera at the 102nd Symphony...

Toby Kahn, of Berkeley, holds his film camera at the 102nd Symphony... Photo-5134992.69484 - SFGate

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Daniel Diaz (left) and Deepa Pakianathan (right) make their way back into the performance hall at Davies Symphony Hall during the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013. Michael Tilson Thomas led the orchestra in Gershwin's An American in Paris and Antheil's Jazz Symphony. Audra McDonald joined the orchestra to perform selections from the American Songbook.

Former San Francisco Mayor Willie Brown is seen at the 102nd Symphony gala opening night at Davies Symphony Hall in San Francisco, Calif. on Tuesday, Sept. 3, 2013.

Photo: Stephen Lam, Special To The Chronicle

Former San Francisco Mayor Willie Brown is seen at the 102nd...

Former San Francisco Mayor Willie Brown is seen at the 102nd... Photo-5134998.69484 - SFGate

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Sharon Higgins and Stacy Lucier chat during the intermission of performance at the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013. Michael Tilson Thomas led the orchestra in Gershwin's An American in Paris and Antheil's Jazz Symphony. Audra McDonald joined the orchestra to perform selections from the American Songbook.

Lobster salad is the first course served at the 102nd San Francisco Symphony Gala at Davies Symphony Hall in San Francisco Calif. on Tuesday, Sept. 3, 2013.

Photo: Alex Washburn, Special To The Chronicle

Lobster salad is the first course served at the 102nd San Francisco...

Lobster salad is the first course served at the 102nd San Francisco... Photo-5135061.69484 - SFGate

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San Francisco Mayor Ed Lee raises a glass to toast with his dining companions during the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013. After dinner Michael Tilson Thomas led the orchestra in Gershwin's An American in Paris and Antheil's Jazz Symphony. Audra McDonald joined the orchestra to perform selections from the American Songbook.

Photo: Alex Washburn, Special To The Chronicle

San Francisco Mayor Ed Lee raises a glass to toast with his dining...

San Francisco Mayor Ed Lee raises a glass to toast with his dining... Photo-5135106.69484 - SFGate

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Irene Johannsmeier, of Belvedere, waits for her husband in the lobby during the 102nd Symphony gala opening night at Davies Symphony Hall in San Francisco, Calif. on Tuesday, Sept. 3, 2013.

Photo: Stephen Lam, Special To The Chronicle

Irene Johannsmeier, of Belvedere, waits for her husband in the...

Irene Johannsmeier, of Belvedere, waits for her husband in the... Photo-5135113.69484 - SFGate

Attendees of the 102nd San Francisco Symphony Gala make their way from cocktail hour into Davies Symphony hall for the start of the performance in San Francisco Calif. on Tuesday, Sept. 3, 2013. Michael Tilson Thomas led the orchestra in Gershwin's An American in Paris and Antheil's Jazz Symphony. Audra McDonald joined the orchestra to perform selections from the American Songbook.

Photo: Alex Washburn, Special To The Chronicle

Attendees of the 102nd San Francisco Symphony Gala make their way...

Attendees of the 102nd San Francisco Symphony Gala make their way... Photo-5135112.69484 - SFGate

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Evelina Boyd dance with Alan Manuel at the Gala After-Party at Davies Symphony Hall in San Francisco, Calif. on Tuesday, Sept. 3, 2013.

Maria-Christina Stewart and Daniel Chen spin each other around the dance floor during the after-party of the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013. In addition to live music and DJs the after-party included various carnival type snacks such as popcorn, cotton candy and pretzels.

Photo: Alex Washburn, Special To The Chronicle

Maria-Christina Stewart and Daniel Chen spin each other around the...

Maria-Christina Stewart and Daniel Chen spin each other around the... Photo-5136265.69484 - SFGate

Megan Kurashige and Lauren Ghallager (left to right) dance to Michael Jackson during the after-party of the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013. It was their first time attending the event.

Joe Corning gets low to the music with friends during the after-party of the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013. The after-party lasted till midnight entertaining guests with a live band, DJs and snacks.

Photo: Alex Washburn, Special To The Chronicle

Joe Corning gets low to the music with friends during the...

Joe Corning gets low to the music with friends during the... Photo-5136282.69484 - SFGate

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Mirza Alam claps his hands in the air to the music during the after-party of the 102nd San Francisco Symphony Gala in San Francisco Calif. on Tuesday, Sept. 3, 2013. The after-party started just after the musical performances and lasted till midnight.

Photo: Alex Washburn, Special To The Chronicle

Mirza Alam claps his hands in the air to the music during the...

Mirza Alam claps his hands in the air to the music during the... Photo-5136284.69484 - SFGate